I've got 18 Buff Orpington egg in my incubator. They are at day 4 and I cannot see anything. This is my first time trying to hatch brown eggs. I have tried to hatch black eggs, but because they were black I didn't bother candling them. They did develop fully, but did not hatch. Because this is my first time dealing with shipped eggs, and I spent money on them, I don't want one to be dead and contaminate/kill the other eggs. I also have a dozen duck eggs in there that are deloping very nice, and i don't want any dead chicken eggs to kill them. So, my questions are, what do they look like at days 3-6? Any pics? Also, will it start to get easier to see the development as they get older? Thanks in advance for any answers.